一、安装docker

1、下载docker安装包：https://download.docker.com/linux/static/stable/x86_64/

2、安装docker：

# 将docker安装包传到/tmp下

cd /tmp

tar -xvf 安装包

cp docker/* /usr/bin/

3、配置docker.service服务：

vi /etc/systemd/system/docker.service

[Unit]

Description=Docker Application Container Engine

Documentation=https://docs.docker.com

After=network-online.target firewalld.service

Wants=network-online.target

[Service]

Type=notify

# the default is not to use systemd for cgroups because the delegate issues still

# exists and systemd currently does not support the cgroup feature set required

# for containers run by docker

# 将/data/docker替换为你实际的docker存储目录，docker数据存储路径默认在/var/lib/docker

ExecStart=/usr/bin/dockerd --graph=/data/docker --selinux-enabled=false

ExecReload=/bin/kill -s HUP $MAINPID

# Having non-zero Limit*s causes performance problems due to accounting overhead

# in the kernel. We recommend using cgroups to do container-local accounting.

LimitNOFILE=infinity

LimitNPROC=infinity

LimitCORE=infinity

# Uncomment TasksMax if your systemd version supports it.

# Only systemd 226 and above support this version.

#TasksMax=infinity

TimeoutStartSec=0

# set delegate yes so that systemd does not reset the cgroups of docker containers

Delegate=yes

# kill only the docker process, not all processes in the cgroup

KillMode=process

# restart the docker process if it exits prematurely

Restart=on-failure

StartLimitBurst=3

StartLimitInterval=60s

[Install]

WantedBy=multi-user.target

4、docker服务启动：

chmod 777 /etc/systemd/system/docker.service

mkdir /data/docker

systemctl daemon-reload

systemctl start docker

systemctl enable docker

systemctl status docker